US Bridges

Wilkins RD over Muddy Creek

Fair

Lane County, Oregon · 020 MI N of Coburg · Structure no. 39C143162000040

Built
1973
52 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
240
2020 count
Owner
County
County Highway Agency

About this bridge

Wilkins RD over Muddy Creek is a prestressed concrete slab carrying Wilkins RD over Muddy Creek in Lane County, Oregon. It was built in 1973, so it is 52 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 240 vehicles a day, roughly 5% of them trucks, projected to reach 280 by 2025. The structure is 36 ft (11 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesWilkins RD
CrossesMuddy Creek
Location020 MI N of Coburg
RouteCounty Highway C1620
CountyLane County
StateOregon
Coordinates44.16753, -123.06376
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2020)
Projected traffic280 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wilkins RD over Muddy Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is Wilkins RD over Muddy Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does Wilkins RD over Muddy Creek carry?

About 240 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Wilkins RD over Muddy Creek?

The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns Wilkins RD over Muddy Creek?

It is owned by the County Highway Agency.